My wife purchased an Aronet CO₂ monitor, and I took it with me on a business trip last week. The CO₂ while on the flight was in the 3000's range. The CO₂ at my client's office was in the mid 2000's range, as well as the hotel. Opening the hotel window the allowed 2 inches reduces CO₂ to the 600 range in 10 minutes, but the client's office windows do not open, and of course neither do the airplane windows.
I've also noticed when working indoors or when driving, if the CO₂ is above 1500 I get drowsy, so the degree it is no longer responsible driving a car.
Air safety: are we going to fight a moronic battle over this too?
There was no meaningful attempt or debate about changing ventilation standards then when it would have tangibly saved lives, there certainly won't be now.
And most were the same people repeating the "are you for or against science?" line.
Crazy years, dominated by completely random propaganda. Discussions on calmer times follow different rules, and if nobody decides to spend a lot of money stopping it, it can follow rational, evidence based lines.
Whereas personal-domain actions like sanitizing and masking cost companies basically nothing and reinforce the mindset that covid mitigation is an individual responsibility and so the consequences from having it are an individual burden. It doesn't even matter if they work or not, from this perspective, which explains why pointless things like sanitizing and QR menus persisted so long.
At least one person (with multiple chemical sensitivity) committed suicide (medically-assisted) because the sanitation and smoking in her apartment complex during COVID made her life so miserable she didn't want to live anymore. https://www.ctvnews.ca/health/woman-with-chemical-sensitivit...
Nearly any blanket-like measure was blocked by those. E.g. Vitamin-D supplementation, of which we know almost every indoor worker has a deficit of in western countries. Never ever was this prompted by govs even though there’s a clear correlation between deficit and deaths (not causation) and it has even antiviral properties (I suggest you to look into MedCram YouTube channel on videos around the first year of COVID where they go over many case studies on potential treatments)
I always assumed they intentionally messed with oxygen in the cabin to "relax" travelers.
Anecdotally, I have often experienced a sedative effect on airplanes that I do not ever experience in land vehicles.
For one, it's really difficult/energy intensive to increase the level of oxygen in a space. Second, it's very very difficult to purify oxygen -- because oxygen oxidizes stuff. Even if you could do that, raising the level of oxygen is extremely dangerous, because it radically increases flammability of things and makes fire much worse. For an example of this: Apollo 1.
AFAIK the air in a Plane is cycled out too fast for that amount to develop. Maybe the Lower air pressure was the cause? Since it was portable it was probably the NIR type? If its not measuring all the time it might also be the heater type - I am really not sure how that type would deal with low pressure. Or was is the "eCO2" type - in that case well I doubt you get anything out of that thing in a plane except a high number.
One thing I noticed is that CO2 seems to "flow and pool" in certain places as it seemingly "rains" down and the room is "filled" from the bottom up. A Table for instance might develop a layer that is thick enough for my meter to hoover it up (it has a fan).
So, I could easily see the aircraft venting mostly 700ppm air while some areas hit 3000 ppm internally.
https://www.latimes.com/science/sciencenow/la-xpm-2013-sep-1...
Usually what I do is set it on recirculate, and then every ~10 minutes I periodically "flush" the CO2-laden interior air for a minute or so. Ideally, I'm able to do this "flush" when I'm away from a major city or high-traffic road (and not when driving behind a soot-spewing diesel bus/semi/garbage/cement truck).
I wish there were some way to automate this logic!
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(and yes, my dear observant reader, if I could recirculate "only" 90% of the exterior air it would achieve the same steady-state result, but modern cars got rid of the "slider" that lets you select a percentage of recirculate air... ::sigh::)
so the old adage of rolling down the window when driving might actually have some factual logic to it. of course, people are only considering that when at the extreme end of trying to stay awake from already driving past safe limits, but it could easily make a long haul trip more bearable by remembering to crack the window at intervals. then again, if you're riding with my buddies, you were already having to crack the windows at intervals, but for other reasons.
